Kairos Power Raises $643M for Google Nuclear

Kairos Power secures $643 million to build nuclear reactors for Google.

Oct 15, 2026

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Kairos Power Raises $643M for Google Nuclear

Kairos Power secures $643 million to build nuclear reactors for Google.

In brief

Kairos Power secures $643 million to build nuclear reactors for Google. Kairos Power raised $643 million in late-stage funding to build 500MW of advanced nuclear reactors for Google by 2035. Originally reported by Dealroom.

Quick answers

Why Now?
Kairos must prove its unproven molten salt reactor works before scaling to power Google data centers.
What is the key takeaway from Kairos Power Raises $643M for Google Nuclear?
Kairos Power raised $643 million in late-stage funding to build 500MW of advanced nuclear reactors for Google by 2035.

Funding Round

Kairos Power raised $643 million in late-stage funding led by Google Ventures and Samsung C&T.

Reactor Timeline

Hermes 2, a 50MW demonstration reactor, will switch on in 2030 to test technology for Google's 500MW reactors by 2035.

Why Now?

Kairos must prove its unproven molten salt reactor works before scaling to power Google data centers.

At a glance

Kairos Power raised $643 million in late-stage funding to build 500MW of advanced nuclear reactors for Google by 2035.

Read the original on Dealroom

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